摘要
采用静电力自组装和原位化学氧化聚合相结合的方法制备了聚吡咯/纳米二氧化钛(PPy/TiO_2)复合薄膜,并进行了表面电阻测试及紫外-可见光谱分析、原子力显微镜分析．利用平面叉指电极结构制备了PPy和PPy/TiO_2薄膜气体传感器,研究了其在常温下对有毒气体NH_3的敏感性．结果表明,相同条件下PPy/TiO_2复合薄膜传感器的响应/恢复时间均优于PPy薄膜传感器．同时测试了PPy/TiO_2复合薄膜传感器的湿度特性和稳定性．
Polypyrrole(PPy)/TiO_2 nanocomposite thin films were fabricated by electrostatic self-assembly and in situ chemical oxidation polymerization combined technique.The surface resistances of PPy/TiO_2 thin films were measured,and the films were characterized by UV-vis spectroscopy and Atomic Force Microscopy(AFM). With the assistance of interdigitated electrodes the gas sensors using PPy and PPy/TiO_2 thin films were achieved. The sensitivities of sensors to toxic gases NH_3 at room temperature were studied.The...
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2006年第S1期594-598,共5页
Journal of University of Electronic Science and Technology of China
基金
国有自然科学基金(60372002
60425101)
